NEW SPECIES OF GEOMETRID^ FROM FORMOSA. 271 



tion, has stated :— ** Galeatus, Curt., Ent. Map;, i. p. 196 (1833) 

 = Cadmillos, Dist., Ann. Soc. Ent. Belg. liii. p. 113 (1909) ; 

 id. Faun. Brit. Ind. PJiynch. v. p. 107 (1910). 



I have figured both these genera, and given differential 

 structural characters, and must be content to leave these figures 

 and descriptions to speak for themselves. 



NEW SPECIES OF GEOMETRID^ FROM FORMOSA. 

 By a. E. Wileman, F.E.S. 



Aracima serrata, sp. n. 



Fore wings greenish yellow ; crescent at outer end of the cell, and 

 postmedial line dark purplish ; the line bluntly serrated, indented 

 above dorsum. Hind wings greenish yellow ; postmedial line purplish, 

 diffuse towards the costa, where there are clusters of purplish dots 

 on each side of the line. Fringes of all the wings purplish. Under 

 side yellowish, markings as above ; the hind wings rather paler than 

 the fore wings. 



Expanse, 44 millim. 



A male specimen from Rantaizan (7500 ft.), May 10th, 1909. 



Collection number, 1824. 



Aids arizana, sp. n. 



Fore wings brownish with a faint purplish tinge, finely sprinkled 

 with black atoms ; ante- and postmedial lines black, the first indis- 

 tinct, bluntly angled below costa, the second almost parallel with 

 termen, bluntly serrate ; space between lines paler, almost whitish ; 

 discal mark dusky. Hind wings similar in colour to median area of 

 fore wings ; postmedial fine blackish, curved, and tapered towards 

 the costa. Fringes preceded by a brown crenulate line. Under side 

 of fore wings hardly paler between lines ; a pale apical patch and 

 smaller pale patch below middle of terminal area ; lower two-thirds 

 of postmedial line on hind wings double. 



Expanse, 36 millim. 



One example of each sex from Arizan (7500 ft.), September, 

 1906. 



Collection number, 797. 



Aids brevifasciata, sp. n. 

 Fore wings ochreous brown ; ante- and postmedial lines repre- 

 sented by black dots on the veins, each line from a blackish spot on 

 the costa ; basal patch blackish ; discal spot black, oval, a diffuse 

 spot above it on the costa ; subterminal line whitish but not clearly 

 defined, passing through blackish clouds at apex, above middle, and 

 at tornus ; area beyond the line powdered with blackish, black bars 

 between veins in upper part. Hind wings ochreous brown, paler on 

 costal area ; a broad blackish central band, not extended to costa, 

 enclosing black discal dot ; terminal area barred with blackish as on 



